CN107189840A - Inserted high temperature composite solid lubricant material of self-lubricating bearing and preparation method thereof - Google Patents
Inserted high temperature composite solid lubricant material of self-lubricating bearing and preparation method thereof Download PDFInfo
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- CN107189840A CN107189840A CN201710411620.8A CN201710411620A CN107189840A CN 107189840 A CN107189840 A CN 107189840A CN 201710411620 A CN201710411620 A CN 201710411620A CN 107189840 A CN107189840 A CN 107189840A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/08—Solids
Abstract
The present invention relates to the lubricating area of self-lubricating bearing, specifically inserted high temperature composite solid lubricant material of self-lubricating bearing and preparation method thereof.Formed by following component proportioning：Polytetrafluoroethylene (PTFE) 25%~55%, expansible graphite powder 24%~40%, nano molybdenum disulfide powder 9%~15%, nano-aluminium oxide 6%~10%, antimony oxide 3%~5%, CNT 3%~5%.At room temperature, polytetrafluoroethylene (PTFE), expansible graphite, nano molybdenum disulfide, nano-aluminium oxide, antimony oxide and carbon nanotube are mixed, powder after well mixed is put into vacuum drying chamber, dry mixed-powder is put into cylindrical type mould and is pressed into cylindrical shape, compressing cylinder is put into vacuum sintering furnace progress vacuum-sintering processing, and then furnace cooling is to room temperature.300 DEG C of operating temperature can continuous and stable operation, under 400 DEG C of high temperature, material is still adsorbed realizes self-lubricating on self-lubricating bearing metallic matrix.
Description
Technical field
The present invention relates to the lubrication technical field of self-lubricating bearing, and in particular to a kind of inserted high temperature of self-lubricating bearing is answered
Close solid lubricant and preparation method thereof.
Background technology
High temperature, top load, lubricating difficulties are born at some or can not be lubricated etc. under harsh working condition, self-lubricating bearing
It is widely used.Due to ecological environment, technology, economic dispatch aspect, self-lubricating bearing technology is that current development becomes
Gesture.Self-lubricating technology bearing breaches the limitation by grease lubrication, realizes oil-free lubrication.Copper-based mosaic self lubricating axle
Hold with its inexpensive and good friction and wear characteristic, obtain more and more extensive in application in machine equipments.Mosaic self-lubricating axle
Hold with simple in construction, small volume, lightweight, cost is low the characteristics of.The material inlayed in sliding bearing is a class practicality
By force, be widely used and have the solid lubricant of good development prospect, its played in the relative rotation of axle and bearing support with
Lubrication.
Traditional sliding bearing inlaid material is mainly graphite lubrication post, and its formula is mainly divided to two major classes, and a class is mainly wrapped
Include graphite powder, pitch and asphalt adhesive etc., material passes through kneading, compression molding, high-temperature roasting, and carry out high temperature graphitization and one be
The machining final molding of row, solid lubricant prepared by the method greasy property is poor, frictional force greatly, abrasion resistance
Difference, and the utilization rate of material is low.Another graphite lubrication post is main using polytetrafluoroethylene (PTFE) as matrix, adds a certain amount of graphite powder
And pure copper powder, mixing material is repressed, sintering, cooling final molding, the bearing capacity of the solid lubricant of the method preparation
Although being improved, its greasy property and abrasion resistance are still poor.What is used at present inlays graphite lubrication post self-lubricating
The carrying of bearing is mostly in 50-90Mpa, and operating temperature is not suitable for the high temperature in industries such as metallurgy typically below 200-300 DEG C
Worked with the conditions of top load.
Nano material have the anti-wear lubricating effect more more excellent than traditional material, give full play to the advantage of nano material with
And the synergy between various lubriation materials, it can obtain before more excellent greasy property, composite solid lubricant materials application
Scape is boundless.
The content of the invention
The invention aims to the shortcoming for overcoming above-mentioned prior art presence, there is provided a kind of improved self-lubricating bearing
Inserted high temperature composite solid lubricant material and preparation method thereof, formation is suitable for using under high temperature and high load environment, has
The composite solid lubricant material of prominent lubricant effect.
A kind of inserted high temperature composite solid lubricant material of self-lubricating bearing, is adopted the following technical scheme that：
A kind of inserted high temperature composite solid lubricant material of self-lubricating bearing, is formed by following component by quality proportioning：It is poly-
Tetrafluoroethene 25%~55%, expansible graphite powder 24%~40%, nano molybdenum disulfide powder 9%~15%, nanometer three is aoxidized
Two aluminium 6%~10%, antimony oxide 3%~5%, CNT 3%~5%.
The inserted high temperature composite solid lubricant material of self-lubricating bearing that above-mentioned proportioning components are obtained, with prior art phase
Than still there is good friction and wear characteristic at high temperature, greasy property and service life are greatly improved.
The preferred scheme of the inserted high temperature composite solid lubricant material of self-lubricating bearing is：
The particle diameter of polytetrafluoroethylene (PTFE) is 2~30 μm.
The fixation carbon content of expansible graphite powder is more than or equal to 98%, the mesh of particle diameter 500~1500.
The granularity of nano molybdenum disulfide powder is 40~200nm, and particle shape is spherical or sheet.
The granularity of nano-aluminium oxide is 30~300nm.
CNT is single wall or many wall constructions, and its purity is more than or equal to 95%, and external diameter is 8~50nm, and length is more than
Or equal to 3 μm.
The preparation method of the inserted high temperature composite solid lubricant material of self-lubricating bearing, is adopted the following technical scheme that：
The preparation method of the inserted high temperature composite solid lubricant material of self-lubricating bearing, is carried out as follows：
A, material mixing：
At room temperature, by polytetrafluoroethylene (PTFE), expansible graphite, nano molybdenum disulfide, nano-aluminium oxide, antimony oxide
And carbon nanotube, added after mixing in proportion on ball mill, under the conditions of rotating speed 250r/min, 10~14h of ball milling will be mixed
Powder after closing uniformly is put into vacuum drying chamber, and 2~3h is dried at 80~100 DEG C；
B, compacting：
Dry mixed-powder is put into cylindrical type mould and is pressed into cylindrical shape, the dwell time is 10~20s, mould
Molded 30~40Mpa of pressure；
C, sintering：
Compressing cylinder, which is put into vacuum sintering furnace, carries out vacuum-sintering processing, 20~60 DEG C/h of heating rate,
1~3h is incubated after temperature is heated to 280~320 DEG C, is heated to after 380~400 DEG C be incubated 4~6h, rate of temperature fall 20~60
DEG C/h, when cooling to 280~320 DEG C, 1~3h is incubated, then furnace cooling is to room temperature.
Using above-mentioned preparation method the present invention compared with prior art, at high temperature still have good fretting wear
Characteristic, greasy property and service life are greatly improved；Can continuous and stable operation, its coefficient of friction in 300 DEG C or so of operating temperature
Less than 0.1, service life improves more than 2 times；Under 400 DEG C of high temperature, the material still can be adsorbed on self-lubricating bearing metallic matrix
On realize self-lubricating.
Preparation method use preferred scheme be：
By 40% expansible graphite powder, 15% nano molybdenum disulfide powder, 10% nano-aluminium oxide, 5% 3 oxidation two
In antimony, 5% CNT and 25% polytetrafluoroethylene (PTFE), four ball grinders for adding planetary ball mill, add ball grinder and hold
Two absolute ethyl alcohol accumulated score of three, under the conditions of rotational speed of ball-mill 250r/min, ball milling 12h；
By powder of the ball milling mixing after uniform in vacuum drying chamber, 2h is dried under the conditions of 100 DEG C；
By dried mixed-powder be put into mould compacting growth 50mm, diameter phi 15 cylinder, the dwell time is
10s, compression molding pressure 40Mpa；
Compressing cylinder is subjected to vacuum-sintering in vacuum sintering furnace, 50 DEG C/h of heating rate, when temperature plus
1h is incubated after hot to 300 DEG C, is heated to after 380 DEG C be incubated 4h, 50 DEG C/h of rate of temperature fall, when cooling to 300 DEG C, 1h is incubated, so
Furnace cooling is to room temperature afterwards.
By 32% expansible graphite powder, 12% nano molybdenum disulfide powder, 8% nano-aluminium oxide, 4% 3 oxidation two
In antimony, 4% CNT and 40% polytetrafluoroethylene (PTFE), four ball grinders for adding planetary ball mill, add ball grinder and hold
Two absolute ethyl alcohol accumulated score of three, under the conditions of rotational speed of ball-mill 250r/min, ball milling 12h.
Embodiment
The present invention is described in detail with reference to embodiment：
Embodiment one：
Embodiment 1：High temperature composite solid lubricant material prescription one
(1) material therefor in composite solid lubricant material prescription is weighed respectively by weight percentage, 40% can be swollen
(Qingdao Heng Run reaches graphite product Co., Ltd, 1000 mesh, carbon amounts to swollen graphite powder:99.1%~99.2%), 15% nanometer of two sulphur
Change molybdenum powder (Shanghai is in Chemical Co., Ltd. of nation, granularity 60nm), (the rich grand mineral article in Shanxi has 10% nano-aluminium oxide
Limit company, granularity 50nm), 5% antimony oxide (analyzes pure, Tianjin Yong great chemical reagent Co., Ltd), 5% carbon nanometer
Pipe (3~12nm of external diameter, length is 8~15 μm for Suzhou Heng Qiu graphenes Co., Ltd, many wall constructions), surplus is polytetrafluoroethyl-ne
Alkene, the particle diameter of the polytetrafluoroethylene (PTFE) selected by the present embodiment is 2~30 μm.
(2) load weighted various materials are added separately in four ball grinders of planetary ball mill, add ball grinder
The absolute ethyl alcohol (being separately added into 2/3rds in each ball grinder) of volume 2/3rds, in rotational speed of ball-mill 250r/min conditions
Under, ball milling 12h is full and uniform by mixture.
(3) by powder of the ball milling mixing after uniform in vacuum drying chamber, 2h is dried under the conditions of 100 DEG C.
(4) dried mixed-powder is put into and growth 50mm, the cylinder of diameter phi 15, dwell time is suppressed in mould
For 10s, compression molding pressure 40Mpa.
(5) compressing cylinder is subjected to vacuum-sintering in vacuum sintering furnace, 50 DEG C/h of heating rate works as temperature
1h is incubated after being heated to 300 DEG C, is heated to after 380 DEG C be incubated 4h, 50 DEG C/h of rate of temperature fall, when cooling to 300 DEG C, 1h is incubated,
Then furnace cooling is to room temperature.
High temperature composite solid lubricant material is tested on MG-2000 type high-speed and high-temperature friction wear testing machines in different temperatures
Under average friction coefficient, with commercially available graphite rod (polytetrafluoroethylene (PTFE) is base, addition 40% graphite powder and 5% pure copper powder) carry out pair
Than.Using pin-disk way of contact, fraction time is 30min.The friction and wear behavior contrast of two kinds of materials is as shown in table 1.
The solid lubricant friction and wear behavior of table 1 contrast one
Polytetrafluoroethylene (PTFE) has excellent self-lubricating property, with relatively low coefficient of friction, can high temperature resistant, even if bearing
Temperature can also keep gel state without flowing, its mechanical performance is poor, not wear-resisting to more than fusing point, but can be solid as meeting
The framework material of body lubriation material.The particle diameter of polytetrafluoroethylene (PTFE) of the present invention is 2-30 μm.
Generally, the coefficient of friction of graphite is 0.05~0.19, and when temperature is more than 540 DEG C, due to subtracting for moisture
Few, the greasy property of graphite will deteriorate rapidly, wear resistance reduction.Expansible graphite is a kind of new carbon, due to its knot
There is substantial amounts of micropore in structure, it not only has excellent tribological property, and with good absorption property, with other lubrications
Material meets, and using the adsorptivity to oxygen and steam, can effectively prevent the oxidation deactivation under other lubriation material hot environments, carry
Height meets the service life of solid lubricant.The fixation carbon content of the expansible graphite powder of the present embodiment is more than or equal to
98%, the mesh of particle diameter 500~1500.
The coefficient of friction of molybdenum disulfide is less than other solid lubricants, using its nano effect, in solid lubricant
Addition nano molybdenum disulfide can be effectively improved greasy property, but when temperature is more than 350 DEG C, the greasy property of molybdenum disulfide will
Significantly reduce, therefore under the conditions of high-temperature work environment, antioxidant must be added；The granularity of nano molybdenum disulfide powder be 40~
200nm, particle shape is spherical or sheet.
Alundum (Al2O3) is a kind of high-temperature lubricating material, although plays the greasy property when temperature is less than 250 DEG C and pays no attention to
Think, but when temperature is more than 250 DEG C, its greasy property has exceeded molybdenum disulfide, shows good greasy property；Nanometer three
The granularity of Al 2 O is 30-300nm.
Antimony oxide is a kind of from consumption-type solid lubricant, with cubic crystal structure, with good antioxygen
Change ability, when it collectively acts as lubricant with molybdenum disulfide, can reduce the oxidation rate of molybdenum disulfide, significantly improve two sulphur
Change the temperature in use of molybdenum.
CNT has excellent mechanical property, as the enhancing phase of composite, can largely improve
Ultimate strength, toughness and the heat resistance of material.By CNT addition in high temperature composite solid lubricant material, it is set uniformly to divide
Dissipate in lubriation material, play a supporting role, the extensive damage of polytetrafluoroethylene (PTFE) in friction process can be prevented, so as to
Further improve wear resistance and service life.Further described CNT can be single wall or many wall constructions, its purity
More than or equal to 95%, external diameter is 8~50nm, and length is more than or equal to 3 μm.
Embodiment two：
Embodiment 2：High temperature composite solid lubricant material prescription two
The formula of high temperature composite solid lubricant material is by weight percentage：32% expansible graphite powder, 12% nanometer two
Vulcanization molybdenum powder, 8% nano-aluminium oxide, 4% antimony oxide, 4% CNT, surplus is polytetrafluoroethylene (PTFE)；Preparation side
Described in method be the same as Example one.
The average friction coefficient of high temperature composite solid lubricant material at different temperatures is tested on friction wear testing machine,
Contrasted with commercially available graphite rod (polytetrafluoroethylene (PTFE) is base, 24% graphite powder of addition and 5% pure copper powder).Using pin-disk contact
Mode, fraction time is 30min.The friction and wear behavior contrast of two kinds of materials is as shown in table 2.
The solid lubricant average friction coefficient of table 2 contrast one
Claims (9)
1. a kind of inserted high temperature composite solid lubricant material of self-lubricating bearing, it is characterised in that：Matched somebody with somebody by following component by quality
Than into：Polytetrafluoroethylene (PTFE) 25%~55%, expansible graphite powder 24%~40%, nano molybdenum disulfide powder 9%~15% is received
Rice alundum (Al2O3) 6%~10%, antimony oxide 3%~5%, CNT 3%~5%.
2. the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 1, it is characterised in that：Poly- four
The particle diameter of PVF is 2~30 μm.
3. the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 1, it is characterised in that：Can be swollen
The fixation carbon content of swollen graphite powder is more than or equal to 98%, the mesh of particle diameter 500~1500.
4. the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 1, it is characterised in that：Nanometer
The granularity of molybdenum disulphide powder is 40~200nm, and particle shape is spherical or sheet.
5. the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 1, it is characterised in that：Nanometer
The granularity of alundum (Al2O3) is 30~300nm.
6. the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 1, it is characterised in that：Carbon is received
Mitron is single wall or many wall constructions, and its purity is more than or equal to 95%, and external diameter is 8~50nm, and length is more than or equal to 3 μm.
7. a kind of inserted high temperature composite solid lubricant material of self-lubricating bearing as described in any one in claim 1 to 6
Preparation method, carry out as follows：
A, material mixing：
At room temperature, by polytetrafluoroethylene (PTFE), expansible graphite, nano molybdenum disulfide, nano-aluminium oxide, antimony oxide and carbon
Nano-tube nano, is added on ball mill after mixing in proportion, under the conditions of rotating speed 250r/min, and 10~14h of ball milling is equal by mixing
Powder after even is put into vacuum drying chamber, and 2~3h is dried at 80~100 DEG C；
B, compacting：
Dry mixed-powder is put into cylindrical type mould and is pressed into cylindrical shape, the dwell time is 10~20s, is molded into
30~40Mpa of type pressure；
C, sintering：
Compressing cylinder is put into progress vacuum-sintering processing in vacuum sintering furnace, and 20~60 DEG C/h of heating rate works as temperature
Degree is heated to after 280~320 DEG C be incubated 1~3h, is heated to after 380~400 DEG C be incubated 4~6h, 20~60 DEG C/h of rate of temperature fall,
When cooling to 280~320 DEG C, 1~3h is incubated, then furnace cooling is to room temperature.
8. the preparation method of the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 7, it is special
Levy and be：
By 40% expansible graphite powder, 15% nano molybdenum disulfide powder, 10% nano-aluminium oxide, 5% antimony oxide,
In 5% CNT and 25% polytetrafluoroethylene (PTFE), four ball grinders for adding planetary ball mill, ball milling tank volume three is added
/ bis- absolute ethyl alcohol, under the conditions of rotational speed of ball-mill 250r/min, ball milling 12h；
By powder of the ball milling mixing after uniform in vacuum drying chamber, 2h is dried under the conditions of 100 DEG C；
Dried mixed-powder is put into growth 50mm, the cylinder of diameter phi 15 is suppressed in mould, the dwell time is 10s,
Compression molding pressure 40Mpa；
Compressing cylinder is subjected to vacuum-sintering, 50 DEG C/h of heating rate, when temperature is heated in vacuum sintering furnace
1h is incubated after 300 DEG C, is heated to after 380 DEG C be incubated 4h, 50 DEG C/h of rate of temperature fall, when cooling to 300 DEG C, 1h, Ran Housui is incubated
Stove is cooled to room temperature.
9. the preparation method of the inserted high temperature composite solid lubricant material of self-lubricating bearing according to claim 7, it is special
Levy and be：By 32% expansible graphite powder, 12% nano molybdenum disulfide powder, 8% nano-aluminium oxide, 4% antimony oxide,
In 4% CNT and 40% polytetrafluoroethylene (PTFE), four ball grinders for adding planetary ball mill, ball milling tank volume three is added
/ bis- absolute ethyl alcohols, under the conditions of rotational speed of ball-mill 250r/min, ball milling 12h.
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| CN108775340A (en) * | 2018-06-23 | 2018-11-09 | 唐山市路北区有色铸件厂 | Filling solidification solid lubricant self-lubricating bearing and preparation method thereof |
| CN108774572A (en) * | 2018-07-31 | 2018-11-09 | 芜湖龙兴合金有限公司 | A kind of flowable bearing kollag |
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| CN108659913A (en) * | 2018-06-21 | 2018-10-16 | 华北理工大学 | Fill cured type high temperature resistant bearing with solid lubricant and preparation method thereof |
| CN108659913B (en) * | 2018-06-21 | 2021-04-02 | 华北理工大学 | Filling and curing type high-temperature-resistant solid lubrication bearing and preparation method thereof |
| CN108775340A (en) * | 2018-06-23 | 2018-11-09 | 唐山市路北区有色铸件厂 | Filling solidification solid lubricant self-lubricating bearing and preparation method thereof |
| CN108774572A (en) * | 2018-07-31 | 2018-11-09 | 芜湖龙兴合金有限公司 | A kind of flowable bearing kollag |
| CN109054968A (en) * | 2018-10-29 | 2018-12-21 | 山东建筑大学 | A kind of hydraulic machinery solid lubricant |
| CN110257135A (en) * | 2019-05-07 | 2019-09-20 | 北京玖星智能科技有限公司 | Solid lubricant and its preparation method and application |
| CN111570807A (en) * | 2020-04-26 | 2020-08-25 | 浙江长盛滑动轴承股份有限公司 | Wormhole type graphite filling structure wear-resisting plate and preparation method thereof |
| CN112029555A (en) * | 2020-09-04 | 2020-12-04 | 汨罗市福缘新材料有限公司 | Method for preparing graphite powder for lubrication by using reclaimed materials |
| CN112029555B (en) * | 2020-09-04 | 2022-05-06 | 汨罗市福缘新材料有限公司 | Method for preparing graphite powder for lubrication by using reclaimed materials |
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Application publication date: 20170922 |